Product Summary

The MAX890LESA+T is a High-Frequency, Regulated, 200mA, Inverting Charge Pump. The device delivers a regulated negative output voltage at loads of up to 200mA. The MAX890LESA+T operates with inputs from 2.7V to 5.5V to produce an adjustable, regulated output from -2.5V to -VIN. The MAX890LESA+T is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The higher switching frequency devices allow the use of smaller capacitors for space-limited applications. The lower frequency devices have lower quiescent current. The MAX890LESA+T also features a 0.1μA logic-controlled shutdown mode and is available in an 8-pin SO package.

Parametrics

MAX890LESA+T absolute maximum ratings: (1)IN to GND: -0.3V to +6V; (2)FB, SHDN, CAP+ to GND: -0.3V to (VIN + 0.3V); (3)AGND to GND: -0.3V to +0.3V; (4)OUT to GND: -6V to +0.3V; (5)CAP- to GND: (VOUT - 0.3V) to +0.3V; (6)Continuous Output Current: 250mA; (7)Output Short-Circuit Duration: Indefinite; (8)Continuous Power Dissipation: 471mW; (9)Operating Temperature Range: -40 to +85℃; (10)Junction Temperature: +150℃; (11)Storage Temperature Range: -65 to +150℃; (12)Lead Temperature (soldering, 10s): +300℃.

Features

MAX890LESA+T features: (1)200mA Output Current; (2)Up to 2MHz Switching Frequency; (3)Small Capacitors (1μF); (4)+2.7V to +5.5V Input Voltage Range; (5)Adjustable Regulated Negative Output (-2.5V to -VIN); (6)0.1μA Logic-Controlled Shutdown; (7)Low 0.05Ω Output Resistance (in regulation); (8)Soft-Start and Foldback Current Limited; (9)Short-Circuit and Thermal Shutdown Protected; (10)8-Pin SO Package.

Diagrams

MAX890LESA+T pin configuration

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